docs: def read_pid_status(pid="self"):
      """
      Returns the system process sstatus.
  
      :param pid: The process ID.
      :returns: The system process status.
      :rtype: dict
      """
      data = {}
      with open("/proc/%s/status" % (pid,), "rb") as status_file:
          for row in status_file:
              fields = row.split()
              if fields and fields[0] in [b"VmRSS:", b"Threads:", b"FDSize:"]:
                  try:
                      data[fields[0].decode("ascii")[:-1]] = int(fields[1])
                  except ValueError:
                      data[fields[0].decode("ascii")[:-1]] = fields[1].decode("ascii")
      return data